[R] substitute variable

[Benilton Carvalho]

condition1 | condition2 (or)
condition1 & condition2 (and)

tmp$PRODUCTS[tmp$PRODUCTS > 70 | tmp$PRODUCTS  < 20] <- NA

b

On Mar 26, 2007, at 12:47 PM, Sergio Della Franca wrote:

> Ok, this run correctly.
>
> Now i want to perform much more conditions, i.e.:
>
> tmp$PRODUCTS[tmp$PRODUCTS > 70] <- NA
>
> and
>
> tmp$PRODUCTS[tmp$PRODUCTS < 20] <- NA.
>
> How can i perform this double condition in the same code?
>
>
> 2007/3/26, Benilton Carvalho <bcarvalh at jhsph.edu>: say your data  
> frame is called "tmp"
>
> tmp$PRODUCTS[tmp$PRODUCTS > 70] <- NA
>
> b
>
> On Mar 26, 2007, at 12:31 PM, Sergio Della Franca wrote:
>
> > Dear R-Helpers,
> >
> > I want to substitute the contents of a variable under some  
> contitions.
> >
> > I.e., I have this data set:
> >
> > YEAR   PRODUCTS
> > 1          80
> > 2          90
> > 3          50
> > 4          60
> > 5          30
> >
> > I want to perform this condition:
> > if products> 70 then products=NA else products=products.
> >
> > I'd like to achive the seguent result:
> >
> >  YEAR   PRODUCTS
> > 1          NA
> > 2          NA
> > 3          50
> > 4          60
> > 5          30
> > How can i develop this?
> >
> >
> > Thank you in advance.
> >
> >
> > Sergio Della Franca
> >
> >       [[alternative HTML version deleted]]
> >
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